Where did the years go? Today marks the 20th anniversary for the release of Mac OS X. In March 2001, as a staff writer for CNET News, I lambasted Apple for shipping the operating system without support for existing hardware—CD-R and DVD drives, mainly. Unfortunately, with my byline stripped from stories and broken links caused by content-management system updates, I can’t find the original article. I came up empty on the Internet Archive Wayback Machine, too. But I’ve got reader emails, and my responses, from the days before on-site commenting.

But before we go there: OS X’s big birthday is the second of four that are profoundly important to Apple this year. We start with iTunes, which the company released in January 2001. Third is opening of the first Apple Store in May, followed by the original “Classic” iPod in October. In Feb. 3, 2011 analysis “Apple’s Gang of Four“, I explain why all are together foundational for the company’s later success—particularly with launch of iPhone on June 29, 2007.